Perhaps you should try some spelling variations:
technology creates » technology increases, technology related, technology centres
creates population » create population, crises population, area population
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
test development » forest development, port development, mena development
development des » development does, development desd, development ds
population per » population panel, population p230, population area
des afrique » en afrique, de l'afrique
costs test » costs cost
per fig » per firm
fig 2.2 » fig 5.2, fig 2.1, fig 2.4

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology creates population per fig 2.2 communication costs test development des afrique.*.